alt Hacker NewsI’m writing a lot of Rust lately, which is rapidly becoming regarded as a conventional language, and I sure do appreciate all those things I use every day that end in exclamation points.
I’m writing a lot of Rust lately, which is rapidly becoming regarded as a conventional language, and I sure do appreciate all those things I use every day that end in exclamation points.
I'm curious here, because I don't know Rust. What's the difference between a macro and a function call from the caller's perspective? Do I (as the caller) need to know I'm calling a macro? Why?
Why is println! a macro when it's a function in almost all other languages?